I keep telling everyone discuss politics and religion but stay away from culinary discussion it will get you in real trouble.
Given that people have real allergies and given that people have individual tastes along with getting sick on something of course are legitimate reasons.
However where the break comes revolves around some of the extremes, addictions, which reflect what is occuring in a person's mind.
some folks will say that they won't eat anything that had a face. some won't eat chicken because of salmonella yet food from lettuce to peanut butter has carried the parasite.
I wonder if those folks were stranded on an island and starving could bring themselves to eat any kind of creature happening by or would they starve?
In my mind I'd say I'll bet it tastes like chicken